Cylinder lock



E F. NORDIN.

CYLINDER LOCK.

APPLICATION FILED MAY20. 1919.

1;,325353. Patented Oct. 17, 1922.

3 SHEETS-SHEET I.

INVENTOB E. F. NORDIN. CYLINDER LOCK. APPLICATION FILED MAY 20, 1919.

1L,41=32,358, Patented Oct 17,1922.

3 SHEETS-SHEET 2- Irma @rviziam EFfiMrd/Mw,

F. NORDIN.

CYLINDER LOCK.

APPLICATION FIL'ED MAY 20. 1919.

Patented. Oct. 17, 1922.

3 SHEETS-SHEET a.

ATTORI E Patented Get. 17, 1922.

CYLINDER LOCK.

Applicatioii filed May 20, 1919. Serial No. 298,357.

To all whom it may concern;

Be itknown that I, ERNST FREDRIK NOR- DIN, a subject of theKing of Sweden, residing at'Gottenborg,in the county of Gottenborg and Bohus and Kingdom of Sweden, have invented new and useful Improvements in Cylinder Locks, of which the following is a specification.

Safety locks, hitherto have been subject to certain disadvantages in that they could be opened by smashing-the glass, in the door or by making a hole in the door in some other way for the purpose of inserting the arm and opening the lock of the door from the inside. Another disadvantage of such previous types of locks is that they cannot be deadlocked from the inside, and consequently theymay always be opened from the outside by anyone, who has the proper key to the lock. Again, if such locks should get out of order their mechanism could not be taken apart and inspected, without removing the whole look from its place in the door. I

This invention has for its object to overcome the inconveniences mentioned and is characterized principally therein, that the lock-cylinder proper, which in a known way is enclosed in a casing and provided with a ordinary key,

locking'device of guard plates may in case of repair be removed by simple means, without removing the whole look. In addition the lock is so arranged as to be bolted by means of a special key from the inside as well as from the outside, so that it cannot be opened from its opposite side with any other key than the proper bolting-key. Further the lock-cylinder is prolonged outside the casing and the projecting portion thereof is provided with additional bolts designed to be operated by means of the and which bolts when in locking position enter a projection on the lockcasing proper. Finally the improved lock is provided with a guiding plate or partition wall, positioned within the nest of guard plates and; has for its object to guide the key, so that the key will be afforded a steady support, when rotated.

Reference will now be made to the accompanying drawings, illustrating two embodiments of the invention, wherein Fig. 1 is an elevational view of a cylindrical lock, from that side of'the lock, which faces the room closed by 'the lock, Figl' 2 shows the same lock, as viewed from the outside of the 1 is a perspective view of the removable cover of the lock-casing, Fig. 5 shows the inside of the lock with the lock-cylinder or lock-mechanism removed, Fig. 6 is a side %dge elevation of the arrangement shown in Fig. 7 is a respective detail of the lock cylinder,

Fig. 8 is a respective detail of the internal fastening ring,

Fig. 9 is a section through the lockwith the key applied,

Fig. 10 is a similar view with the inner or bolting key applied and with the outer key removed,

Fig. 11 is an elevational detail of the guiding plate,

Fig. 12illustrates another embodiment of the lock designed as a common so called mortise-lock or door-lock with the cover of the casing. removed,

7 ing bolts in operative position, and

Fig. 141 shows the same lock in section viewed from above.

In the drawings 1 indicates a casing, in which a frame 1, fitted to the sides 2 and 3 of the casing and provided with a bolt 5, is reciproeable. The frame 1 and the bolt 5 are held in looking position, that is to say with the bolt 5 projecting outside the casing, by means of one or several spiral springs 8, provided between the wall 6 of the casing 1 and the side 7 of the frame 1, said springs being guided by a pin 9, passing through the frame side 7. The outer side of the casing 1 is covered by a lid 10, fastened with screws, and in the embodiment shown in Figs. 1l2 provided with a projecting socket 11 and which has for its purpose together with a socket 12, screwed on the rear side of the casing, to retain and to guide the plates so called guard plates 16, 17', 18

etc., provided with notches for the key-bit, between which plates a plurality of slidingarranged therein.

101 (Figs. 12, 13) by means oi prongs 102,

on the bolts, so. that these are retained in re ed position by means of the prongs 102 resing on the rounding of the spring 101. ()ne (or several). otthe sliding bolts 21, 22, 23 for instance the bolt 22has'the same width beneath its prong 102 asthe other sliding bolts, so that inits raised, withdrawn position (Fig; 12) the bolt"v is retained i so by the spring lOl but is 01 a narrowerwidth than the other bolts 21, 23 above saidprong 102 so as to be able to freely pass the spring 101, when the last-mentioned sliding bolts are lowered,(Fig. 13). A partition .wall 27 positioned between the plates 16 has for its object to limit the way otinserting or the key into the lock as well as to guide the key during its-rotation in the lock. v,The partitionwall '2? is provided. with avhole 34 and with a'proj'ection 35, which during the rotation of the key 20 or 30 isv respectively embraced by a notch 15 or 16 in the key bit.

All guard platcslfiflnlt 16 etc, arefastenedmutually and in the cylinder13 by means 01"? screws 31, 32, which arescrWed in the'bottom 15 of the cylinder. l'npthe lockcylinder there is also provided'a hole 33101 a common spindle handle to he rigidly mounted in the cylinder (Figs. 1-3, 7).

The handle spindle may also be applied in a hole103 (Figs. 12, 13,) in a hub 105, provided with a member. 10st, which'hub 105 may be journalled in suitable openings in the casing and by means of its member 104 engages a corresponding notch in the frame 1 to withdraw the bolt. v i The lock is mounted in such a way, that the projecting cylindrical socket 1'1 enters the material of the doorfand thus becomes invisible.

The operation and is'as follows: When the door, provided with the look,.is to be locked, the locking-bolt -5 on closing the door will first be pressed into the casing 1 against the action of the springS and then will beprojected behind a keeper-plate in the door-case, intended for the locking-bolt.

application of the lock To now lockthe door from the outside the key '20 is put into the key-hole 39 with the bit turned upwards, that is, itis putinto the upper half of the key-hole and is there rotated half a turn in the direction, .shownby the arrow in Fig. 1. The key may now be removed through the lower. half of the key hole39. A M

By rotating the key 20 against the presbolts.

sure of the spring 101, the latter actsgagainst the prongs 102 so that the bolts 24, 25 and "26 will benioved outwardly from the cylinder 13, the bolt 24 entering the frame 1 while the bolts 25 and 26 pass through thecylindrical portion 11 of the cover 10 (see Fig. 8)

preventing the revolving of the lock-cylinder, andby reason of the lugs 37'the bolt 5,

is prevented from reciprocating. On the one half turn to the right so as tolift the sliding bolts upon thecurved springlUlj thus releasing the, lock-cylinder to allowit to revolve freely.

The look, when notibolted', may be-Ibpened in a known way by pressing down the handle: spindle, inserted inthe ,ho l e3 3, thereby rotating. the lock cylinder 13" which retracts the'ibolt against the action of jthespring 8.

bebolted from the inside,jthat from the side opposite that mentioned .above by in. sertm said key wlth its bit turnednpwardly sliding bolt 21 witlrthe part 24 but not the bolts 22, 23 with theparts 25, 26

i lrslong "as the bolt 21 is the locking v position, thus causedby the key 30, the'key20 By means of a special key tl ezlock may 9 0 on'account of the position ofthesliding bolt 21 anddisalinemcnt of the key sweepsinv the bolts cannotbe turned, andthus the. lock" can not be opened from theoutside. w it the handle spindle according. to Fig. 13 is provided with separate partl05yinstead of with the'lock-cylinder proper the framed is operated by the member 104, when said handle is rotated, bringing with .it t hel lockcylinder-13 in case the same is unbolted', as shown in Fig. 13. The present invention has the following advantages over previous types of cylindrical locks. 3

The cylinder 13 with ,its mechanism may hev easily removed from .the .lock, for which purpose vit is only required to unscrew the socket 12. The key s20, 30 obtain a steady with the increased number of slidingvbolts,

since in addition to thepart 2d directly cooperating; with the lockcasing, theparts25, 26 co-operate:with:the projection 11, the number of which last-mentionedv partscan be increased at. will by using more sliding Byr Placing the lock plates, which are quite identical concerning their outlines, the character of the lock may completely be a ltered' and while said...replacing, may be achieved! after the easy removinghof:the cyl- I inder 13, just mentioned, is" it possible Ito 1 ,asaese alter the lock quickly, so that it becomes inaccessible for the ordinary key, if the latter should accidentally come into the possession of an unauthorized person. The partition wall 27 may also be applied on different places between the lock plates, thereby altering the character of the lock.

The arrangement according to Figs. 12, 13, with the sliding bolts held by the spring 101 makes the lock practically burglarproof, because, if anyone should try to poke the bolts upwardly with a picklock and succeeds in lifting one of them, so that it is supported by the spring 101 common to all of the bolts at a point below the prong 102, this sliding bolt will fall down again, since, by the raising of next lock-plate the prong 102 of said plate pushes aside the spring 101, as it passes by this spring.

' Having thus particularly ascertained and described the nature of my said invention and in what manner the same is to be performed, I declare that what I claim is:

1. A safety lock including a casing, an inside cover plate for the casing having an opening therein, a frame slidable in the casing, a locking bolt projecting from the frame, a duplex key operable lock cylinder rotatable in the frame and operably connected with the frame so that when locked the frame is prevented from sliding, means for releasably retaining the lock cylinder in the frame so that it is inaccessible from the oute-rside of the lock when the lock is in position on a door but may be readily removed through the opening in the inside cover plate without disturbing the casing or the position of the frame and bolt and means for sliding the frame when the cylinder is unlocked to retract the bolt.

2. A safety lock including a casing, a frame slidable in the casing, a lock bolt carried by the frame and designed to be projected through the casing, a duplex key operable lock cylinder rotatable in the frame and containing a plurality of slidable bolts and a plurality oflock plates separating the bolts, the bolts being all adapted to be actuated by means of a key insertable from the outer side of the lock while only one or part of the bolts are adapted to be actuated by means of a key insertable in the inner side of the lock, whereby the lock when the last mentioned bolts are brought into locking position can be actuated by the ordinary key with the object of bolting the look from the outer side, means for operably connecting the lock-cylinder with the frame so that when the lock-cylinder is locked the frame is prevented from sliding, means for releasably retaining the lock-cylinder in the frame so that when the lock is in position on the door it is inaccessible from the outerside of the lock but may be readily removed from the inner side without disturbing the casing or the position of the frame and bolt, and means for sliding the frame when the cylinder is unlocked to retract the bolt.

3. A safety lock as claimed in claim 2 wherein the sliding bolts are provided with prongs, and a curved plate-spring common to all the said bolts for cooperating with all of the prongs on the bolts to normally hold the bolts in bolting position.

1. A safety lock as claimed in claim 2 having a partition wall arranged between the lock plates and serving as a support for the key during the rotation thereof.

5. A safety look as claimed in claim 2 wherein the retaining means for the lock cylinders includes a plate on the outside of the casing inaccessible from such side when the lock is in position on a door and a removable socket on the innerside of the lockcasing for cooperating with the plate and being accessible from the inner side so as to be removed to permit the removal of the lockcylinder.

6. A safety lock as claimed in claim 1 wherein the frame is provided with a plurality of notches, lugs on the lock-cylinder for cooperating with certain of the notches in such manner that when the cylinder is in a locked position sliding of the frame is prevented but being designed to permit of a limited sliding movement of the frame when the lock-cylinder is unlocked, a handle-spindle rotatable in the lock-casing and in engagement with the frame for sliding the frame and spring means for normally projecting the frame and bolt.

7. A safety lock including a casing, a frame slidable in the casing, a locking bolt projecting from the frame into the casing, a duplex key operable lock rotatable in the casing and normally engageable with the frame to partially rotatewith the frame during the sliding of the latter and designed to be removablylocked to the frame to prevent movement of the frame, means for sliding the frame when the lock is released and means for normally holding the bolt extended.

8. A safety look as claimed in claim 7 in which the frame is provided with notches and wherein the means for sliding the frame consists of a handle-spindle rotatable in the casing and an arm projecting from the spindle and engageable with the rotation to cause a sliding of the frame upon the rotation of the spindle.

In testimony whereof I have affixed my signature in presence of two witnesses.

ERNST FREDRIK NORDIN. Witnesses:

GUSTAF GERTZ, O. ERIOSON. 

